A depiction of four generations shows how hair styles differed between ages, from clean-shaven to beard and sideburns. The Curtis men with seven-month-old Clyde Curtis, ca. 1913. Courtesy of Sandra Luebking.

(A depiction of four generations shows how hair styles differed between ages, from clean-shaven to beard and sideburns. The Curtis men with seven-month-old Clyde Curtis, ca. 1913. Courtesy of Sandra Luebking.)